Question

Write the sum using summation notation, assuming the suggested pattern continues.

-1 + 2 + 5 + 8 + ... + 44

Answer 1

please help :/

Answer 2

@phi

Answer 3

well answer is 344.
2-(-1) = 3
5-2 =3
8-5 =3

the difference is 3 every time so just find every number after the 3rd number, then add them all together.